Demeter, N. G. (1987). "Semeinaiai obriadnost' tsigan v
kontse XIX-XX VV. (na primere etnicheskoi gruppy kelderari) "
(Household ceremonies of Gysies from the end of the 19th through the end
of the 20th centuries [with the Kalderash ethnic group as an example]).
Dissertation, ANSSSR Institute of Ethnography, Moscow.